Electric toothbrush with vibration sweeping controlled by pressure-sensitive circuit

Abstract

The utility model relates to the technical field of electric toothbrushes, in particular to an electric toothbrush with sweeping vibration controlled by a pressure-sensitive circuit, which comprises a sweeping vibration motor, a control panel for controlling the sweeping vibration motor and a toothbrush head, a sweeping vibration motor shaft is mounted at the output end of the sweeping vibration motor, and the toothbrush head is sleeved at the tail end of the sweeping vibration motor shaft. An elastic connecting medium used for controlling starting and stopping of the sweeping and vibrating motor is installed between the control panel and the sweeping and vibrating motor shaft, an electronic pressure sensing structure is adopted to achieve automatic control over the toothbrush, and specifically, when a power source of the electric toothbrush is turned on, the tooth brushing function cannot be started immediately, and the toothbrush cannot be damaged. When the toothbrush is placed in an oral cavity, toothbrush bristles make contact with the surfaces of teeth and tooth brushing pressure is applied, the pressure can be transmitted to the control panel for controlling the sweeping and vibrating motor through the elastic medium connected with a shaft of the sweeping and vibrating motor and the control panel, and therefore the toothbrush can be driven to rotate. Therefore, the sweeping vibration motor of the toothbrush is activated to start and stop.

Description

Technical Field

[0001] This utility model relates to the field of electric toothbrush technology, specifically to an electric toothbrush whose sweeping vibration is controlled by a pressure-sensitive circuit. Background Technology

[0002] An electric toothbrush is a toothbrush that uses electricity to generate rapid rotation or vibration through a built-in motor to help clean teeth. Compared to traditional manual toothbrushes, electric toothbrushes can remove plaque and tartar more efficiently, improving oral hygiene. In addition, many electric toothbrushes are equipped with different cleaning modes, such as massage and whitening, to meet the diverse needs of users. Using an electric toothbrush can not only improve dental health but also bring a more convenient brushing experience.

[0003] The convenience and intelligent design of electric toothbrushes make daily oral care easier and more enjoyable, but they still have some problems: when using an electric toothbrush, toothpaste is easily shaken off after turning it on, and foam is easily splashed out when rinsing. To avoid this, users need to put the toothbrush in their mouth before turning it on and turn it off before taking it out, which is quite inconvenient. Therefore, in view of the above situation, there is an urgent need to develop an electric toothbrush with pressure-sensitive circuitry to control the sweeping vibration, so as to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The purpose of this invention is to provide an electric toothbrush with vibration controlled by a pressure-sensitive circuit, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric toothbrush with a vibration control circuit, comprising a vibration motor, a control board for controlling the vibration motor, and a toothbrush head. The output end of the vibration motor is equipped with a vibration motor shaft, and the toothbrush head is sleeved on the end of the vibration motor shaft. An elastic connecting medium for controlling the opening and closing of the vibration motor is installed between the control board and the vibration motor shaft.

[0006] Preferably, the connection node between the elastic connecting medium and the control board is the electrode fixed point, and the contact point between the elastic connecting medium and the sweeping vibration motor shaft is the movable electrode point. Specifically, when brushing teeth, the toothbrush head forces the sweeping vibration motor shaft to shift towards the elastic connecting medium, thereby forcing the elastic connecting medium to deform slightly, causing the distance or relative area between the capacitor plates to change. Based on the basic principle of a capacitor, it consists of two conductive plates (electrodes) and a medium in the middle. One electrode is fixed, and the other is movable. When pressure is applied to the movable electrode, it will move towards the fixed electrode, changing the distance between the electrodes and causing a change in capacitance. The magnitude of the pressure is determined by measuring the change in capacitance, thereby triggering the sweeping vibration motor.

[0007] Preferably, the toothbrush head is equipped with toothbrush bristles at the end. Specifically, the toothbrush head and bristles are driven to vibrate at high frequency by a sweeping motor to achieve the effect of cleaning teeth.

[0008] Preferably, the elastic connection medium is made of an elastic metal material, specifically, it is made of a conductive material.

[0009] Compared with the prior art, this utility model provides an electric toothbrush with vibration controlled by a pressure-sensitive circuit, which has the following beneficial effects:

[0010] It employs an electronic pressure-sensing structure to achieve automatic control of the toothbrush. Specifically, when the power is turned on, the brushing function does not immediately start, effectively preventing toothpaste from being splashed off due to the activation of the sweeping motor. When the toothbrush is placed in the mouth and the bristles contact the tooth surface and apply brushing pressure, this pressure is transmitted to the control board that controls the sweeping motor through the elastic medium connecting the sweeping motor shaft and the control board, thereby activating and stopping the sweeping motor. Once the bristles leave the tooth surface, the pressure disappears, and the brushing function stops immediately. This effectively prevents foam from splashing out during rinsing. In addition, this electronic pressure-sensing structure also has an adjustment function. Yes, the pressure causes the elastic connecting medium to deform to varying degrees, which in turn changes the electrode area and the distance between the electrodes between the elastic connecting medium and the vibrating motor shaft. This change directly affects the capacitance, which in turn controls the start and stop of the vibrating motor and enables precise control of the electric toothbrush's vibration frequency. This design not only improves the comfort of using the electric toothbrush but also greatly enhances its convenience. In summary, through its innovative electronic pressure sensing structure, it achieves intelligent control of the electric toothbrush, effectively solving problems such as toothpaste spillage and foam splashing that exist in traditional electric toothbrushes. At the same time, by adjusting the vibration frequency, it improves the user experience. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a front structural diagram of the present utility model.

[0013] In the diagram: 10, sweeping vibration motor; 101, sweeping vibration motor shaft; 20, control board; 201, elastic connecting medium; 202, electrode fixing point; 203, movable electrode point; 30, toothbrush head; 301, toothbrush bristles. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0016] Example:

[0017] Please see Figure 1 This utility model provides a technical solution: an electric toothbrush with a vibration control circuit, including a vibration motor 10, a control board 20 for controlling the vibration motor 10, and a toothbrush head 30. The output end of the vibration motor 10 is equipped with a vibration motor shaft 101, and the toothbrush head 30 is sleeved on the end of the vibration motor shaft 101. An elastic connecting medium 201 for controlling the opening and closing of the vibration motor 10 is installed between the control board 20 and the vibration motor shaft 101.

[0018] Preferably, the connection node between the elastic connecting medium 201 and the control board 20 is the electrode fixed point 202, and the contact point between the elastic connecting medium 201 and the sweeping vibration motor shaft 101 is the movable electrode point 203. Specifically, when brushing teeth, the toothbrush head 30 forces the sweeping vibration motor shaft 101 to shift towards the elastic connecting medium 201, thereby forcing the elastic connecting medium 201 to deform slightly, causing the distance or relative area between the capacitor plates to change. Based on the basic principle of a capacitor, it consists of two conductive plates (electrodes) and a medium in the middle. One electrode is fixed and the other is movable. When pressure is applied to the movable electrode, it will move towards the fixed electrode, changing the distance between the electrodes and causing a change in capacitance. The magnitude of the pressure is determined by measuring the change in capacitance, thereby triggering the sweeping vibration motor 10.

[0019] Preferably, toothbrush head 30 is equipped with toothbrush bristles 301 at the end. Specifically, the toothbrush head 30 and toothbrush bristles 301 are driven to vibrate at high frequency by the sweeping motor 10 to achieve the effect of cleaning teeth.

[0020] Preferably, the elastic connection medium 201 is made of an elastic metal material, specifically, it is made of a conductive material.

[0021] Working principle: First, toothpaste is applied to the toothbrush bristles 301. Then, the power to the electric toothbrush is turned on. Next, the toothbrush head 30 is inserted into the mouth, so that the toothbrush bristles 301, through the toothpaste, come into contact with the tooth surface. When the toothbrush head 30 is subjected to force, it forces the sweeping vibration motor shaft 101 to slightly shift. At this time, the elastic connecting medium 201 contacts the sweeping vibration motor shaft 101 and deforms. Since the end of the sweeping vibration motor shaft 101 is connected to the control board 20 through a wire, the control board 20 is in a closed state, thereby controlling the sweeping vibration motor 10 to work. In conjunction with the sweeping vibration motor shaft 101, the toothbrush head 30 vibrates to perform the brushing operation. The pressure applied between the toothbrush head 30 and the teeth will cause the elastic connecting medium 201 to deform at different rates. The deformation of the elastic connecting medium 201 forces a change in the position of the movable electrode point between the elastic connecting medium 201 and the sweeping motor shaft 101, and also forces a change in the contact area between the elastic connecting medium 201 and the sweeping motor shaft 101. This is a change in the distance between the electrodes and the area of ​​the electrodes. The capacitance C is directly proportional to the area of ​​the electrodes S and inversely proportional to the distance between the electrodes d. Therefore, when the pressure transmitted at the toothbrush head 30 is greater, the movable electrode point of the elastic connecting medium 201 is closer to the sweeping motor 10, and the contact area between the elastic connecting medium 201 and the sweeping motor shaft 101 increases. The control board 20 controls the sweeping motor 10 to turn on and increases its frequency. According to the capacitance calculation formula C=\frac{\varepsilon (where C is capacitance, ρ is dielectric constant, S is plate area, and d is plate spacing). These changes cause a change in capacitance. The control board 20 controls the on / off state and frequency of the brushing motor by detecting the change in capacitance. It should be noted that the electric toothbrush does not immediately start brushing when the power is turned on, thus effectively avoiding the situation where toothpaste is splashed off due to the toothbrush starting.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An electric toothbrush with vibration control by a pressure-sensitive circuit, characterized in that: The device includes a sweeping motor (10), a control board (20) for controlling the sweeping motor (10), and a toothbrush head (30). The output end of the sweeping motor (10) is equipped with a sweeping motor shaft (101), and the toothbrush head (30) is sleeved on the end of the sweeping motor shaft (101). An elastic connecting medium (201) for controlling the opening and closing of the sweeping motor (10) is installed between the control board (20) and the sweeping motor shaft (101).

2. The electric toothbrush with vibration control by a pressure-sensitive circuit according to claim 1, characterized in that: The connection point between the elastic connecting medium (201) and the control board (20) is the electrode fixing point (202), and the contact point between the elastic connecting medium (201) and the sweeping motor shaft (101) is the movable electrode point (203).

3. An electric toothbrush with vibration control by a pressure-sensitive circuit according to claim 1, characterized in that: The toothbrush head (30) is fitted with toothbrush bristles (301) at its end.

4. An electric toothbrush with vibration control by a pressure-sensitive circuit according to claim 1, characterized in that: The elastic connecting medium (201) is made of elastic metal material.

Images